G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
G05B11/00—Automatic controllers
G05B11/01—Automatic controllers electric
G05B11/011—Automatic controllers electric details of the correcting means
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01C—RESISTORS
H01C10/00—Adjustable resistors
H01C10/10—Adjustable resistors adjustable by mechanical pressure or force
H01C10/12—Adjustable resistors adjustable by mechanical pressure or force by changing surface pressure between resistive masses or resistive and conductive masses, e.g. pile type